JPS6341418Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of an elevator door device.

Elevator door devices use multiple hanger rollers that roll on door rails to hang doors and open and close entrances. The door tilts because a large force suddenly acts in the opposite direction to the direction of travel.
Along with this, in order to prevent the hanger roller from floating up and coming off the door rail, an up thrust roller is engaged with the door rail from below to prevent the lifting up and prevent the door from coming off the door rail. is being prevented. The gap between the up thrust roller and the bottom surface of the door rail is set as small as possible to reduce the inclination of the door, and reduce the sound when the up thrust roller hits the bottom surface of the door rail to ensure smooth opening and closing. It is configured so that it can be done.

Figures 1 and 2 show conventional examples of such elevator door devices. In the figures, 1 is a shaft wall, 2 is an entrance formed by cutting out the shaft wall 1, and 3 is a doorway formed by cutting out the shaft wall 1. A door rail 4 is attached to the elevating wall 1 with its longitudinal direction horizontal at the top of the doorway 2 and has a semicylindrical upper surface. 4 engages the outer circumferential surface of the door rail 3 with a concave center portion on the upper surface. a first trochanter consisting of a pair of hanger rollers that roll together;
5 is a hanger plate whose upper part is attached to the hanger roller 4 and hangs down; 6 is a landing door whose top is fixed to the lower end of the hanger plate 5 and hangs down; 7 is a hanger plate which is attached to the lower part of the hanger roller 4. A pair of elongated holes are formed through the plate 5, and the upper end 7a is located near the center of the hanger plate 5, and the lower end 7a is located near both ends of the hanger plate 5.
It is formed to be inclined towards b. 8 is a second trochanter consisting of a pair of up thrust rollers that engages with the lower surface of the door rail 3 below the hanger roller 4; 9 is a shaft attached to this up thrust roller 8, which is passed through the elongated hole 7; , the rectangular base 9a fits into the elongated hole 7, moves up and down along the slope of the elongated hole 7, and engages the up thrust roller 8 with the lower surface of the door rail 3 through a predetermined minute gap. It is something that makes you 10 is a flat washer that is passed through this shaft 9 and covers the elongated hole 7; 11 is screwed onto the shaft 9, and is connected to the shaft 9 through the flat washer 10 and the spring washer 11a.
12 is provided at the upper center of the landing door 6 and engages with a car door (not shown) to open and close the landing door 6. 13 is a nut for attaching the landing door 6 to the hanger plate 5. Protruding from the lower end, sill 1
This is a door show that is loosely inserted into the door 4 and slides.

In the elevator door device configured as described above, when the landing door 6 is driven in the direction of arrow A from the closed state of FIG. 1 via the engaging element 12, the hanger roller 4 hangs the landing door 6. Roll the door rail 3 and open the doorway 2. Then, when the opened landing door 6 is driven in the direction of arrow B in FIG. 1, the entrance/exit 2 is closed.

Suppose that the door 6 of the landing is driven in the direction of arrow B in FIG. 1 from an open state, and suddenly reversed in the direction of arrow A when it hits an obstacle or the like while the door is closed. Engagement element 12
is provided above the center of gravity of the hanger roller 4, hanger plate 5, and landing door 6, so when the landing door is reversed, the upper part of the landing door 6 moves in the direction of arrow C in Fig. 1, while the landing door The lower part of the door 6 moves in the direction of arrow D due to inertia, and the landing door 6 tends to tilt. At this time, the up thrust roller 9 on the front end side of the landing door 6 in the direction of movement when the door is closed abuts against the lower surface of the door rail 3 to prevent the landing door 6 from tilting and to reverse it without any trouble. Conversely, when the door is reversed during opening, the up thrust roller 9 on the front end side in the direction of movement when the door is opened hits the lower surface of the door rail 3.

By the way, over many years, when the up thrust roller 8 collides with the lower surface of the door rail 3, the shaft 9 slides downward along the inclination of the elongated hole 7, causing the up thrust roller 8 and the door rail 3 to The gap becomes larger. For this reason, when the landing door 6 is reversed, the impact force when the up thrust roller 8 hits the bottom surface of the door rail 3 increases, and the impact noise at that time also increases, making it difficult to open and close smoothly. become unable. Furthermore, if left as is and continued to be used, the above-mentioned gap will become even larger, causing problems such as the landing door 6 tilting significantly and the hanger roller 4 coming off the door rail 3 when it is turned over.

This invention is intended to improve the above-mentioned problems.The first trochanter supports the door that opens and closes the entrance and rolls on the door rail, and the second trochanter engages with the door rail from below. The shaft to which is attached is inserted through an elongated hole formed through the door or an accessory of the door at a predetermined angle of inclination and tightened by a tightening means, and the shaft is further fixed by a fixing means, 2nd when the door is reversed
The object of the present invention is to provide a door device that can smoothly open and close by preventing the shaft from moving toward the lower end of the elongated hole even if the trochanter of the door hits the door rail. .

FIG. 3 shows an embodiment of this invention.

In the figure, the same reference numerals as in FIGS. 1 and 2 indicate the same or equivalent parts, and 15 is inserted into the shaft 9 passing through the elongated hole 7 to cover the elongated hole 7 and protrude from the cover surface. fixing means 16 consisting of a washer with a claw in which the claw 15a is recessed toward the lower end 7b of the elongated hole 7;
is a tightening means consisting of a nut that is screwed onto the shaft 9 inserted through the claw washer 15 via a spring washer 16a to tighten the up thrust roller 8 to the hanger plate 5.

In the elevator door device constructed as described above, opening and closing operations are performed in the same manner as in the conventional example shown in FIGS. 1 and 2. Further, when the up thrust roller 8 reverses and hits the lower surface of the door rail 3 during opening and closing, the impact force at that time is applied to the shaft 9, and this shaft 9 is connected to the claw washer 15 tightened by the nut 16. It is fixed by the frictional force between and the hanger plate 5 and the contact between the lower end 7b of the elongated hole 7 and the claw 15a.

That is, according to the above embodiment, even if the up thrust roller 8 hits the lower surface of the door rail 3, the claw 15a of the claw washer 15 contacts the lower end 7b of the elongated hole 7, so the shaft 9 is fixed. It will not move downward. Therefore, the gap between the door rail 3 and the up thrust roller 8 is kept at a very small value, allowing smooth opening and closing.

FIG. 4 shows another embodiment of this invention, in which the reference numeral 17 denotes a washer with a claw, which is a fixing means, having a hole 17a formed in the center through which the shaft 9 passes, and is located on one side at a distance E from the center of the hole 17a. A first claw 17 protruding from the side
b, and a second claw protruding in the opposite direction to the first claw 16b at a position opposite to the first claw 17b through the hole 17a and at a distance F larger than the distance E from the center of the hole 17a. It has a claw 17c.

If the claw washer 17 shown in FIG. 4 is substituted for the claw washer 15 shown in FIG.
When moving the up thrust roller 8 along the elongated hole 7 to determine the position of the up thrust roller 8, if the distance from the lower end 7b of the elongated hole 7 is small, move the first claw 17b to the lower end 7.
If the above-mentioned distance is large, the claw washer 17 can be turned over and the second claw 17c can be brought into contact with the lower end 7b.

Therefore, the size of the door rail 3 may be different,
Furthermore, even if the position of the elongated hole 7 is inaccurate and the distance from the lower end 7b of the elongated hole 7 varies, it can be fixed by selectively using the first claw 17b and the second claw 17c. It is possible to achieve the purpose of the term.

Although the above description has been made regarding the door of the landing, the same applies to the door of the car.

In the above embodiment, the claw washer is used as the fixing means, but the intended purpose can be achieved by applying an adhesive to one side of the washer and adhesively fixing this side to the hanger case.
It can be fixed in any position.

Furthermore, as a fixing means, a washer having a protrusion on one side may be used so that the protrusion bites into the hanger case when the shaft is tightened, or a plurality of holes into which the protrusion is inserted into the hanger case may be formed in stages. The desired purpose can be achieved even if the

Furthermore, the inclination angle of the elongated hole is usually about 15° with respect to the horizontal direction, but it is not limited to this value, and it may be vertically upright,
Furthermore, it is only necessary that it be tilted even slightly and that it can also be moved in the vertical direction by moving the axis.

As described above, this invention consists of making the door that opens and closes the doorway supported by the first trochanter and rolling on the door rail, and forming a long hole with a predetermined inclination angle through the door or the attachment of the door. Then, the shaft to which the second trochanter is attached, which engages with the door rail from below, is inserted into the elongated hole and tightened by the tightening means, and the claw washer is inserted toward the lower end of the elongated hole. Since the claw is recessed and brought into contact with the side wall of the elongated hole, even if the second trochanter hits the door rail when the door is reversed, the shaft will not move toward the lower end of the elongated hole. The gap between the door rail and the second trochanter is maintained at a predetermined value to enable smooth opening and closing operations.

[Brief explanation of the drawing]

Figures 1 and 2 show conventional elevator door devices, with Figure 1 being a rear view of the landing door and Figure 2 being the rear view of the landing door.
3 is a perspective view of a main part showing one embodiment of this invention, and FIG. 4 is a partial perspective view showing another embodiment of this invention. In the figure, 2 is the doorway, 3 is the door rail, 4 is the first trochanter, 6 is the landing door, 7 is the elongated hole, and 8 is the second
9 is a shaft, 11 and 16 are nuts (tightening means), 15 and 17 are claw washers (fixing means), 15
a, 17b, and 17c are claws. In addition, in each drawing, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of claim for utility model registration] (1) A door that opens and closes the doorway, a first trochanter that supports the door and rolls on the door rail, and a second trochanter that engages the door rail from below. A shaft to which this second trochanter is attached and inserted into an elongated hole formed at a predetermined inclination angle in the door or an accessory of the door, and this shaft is tightened to the door or an accessory of the door. The fastening means is fastened by the insertion of the shaft, and has a claw protruding in the direction of insertion of the shaft, and the claw is retracted toward the lower end of the elongated hole to fit into the side wall of the elongated hole. An elevator door device comprising a washer with a claw that is brought into contact with the washer to prevent movement of the shaft. (2) Utility model registration claim No. 1, characterized in that the claws of the claw washer consist of a pair of claws that are at different distances from the hole through which the shaft is inserted and protrude in opposite directions. The elevator door device according to item 1.